One vertex per element, one color per generator, with an edge from x to x·s.
(2,8)(4,9)(10,15)(12,16)(17,18,22,26)(19,25,23,20)(21,29,31,24)(27,28,30,32)(1,2)(3,4)(5,9)(6,10)(7,8)(11,12)(13,16)(14,15)(17,19)(18,20)(21,30)(22,23)(24,32)(25,26)(27,31)(28,29)(34,38)(39,45)(40,46)(47,48) involution — undirected(1,3,7,5)(2,4,8,9)(6,11,14,13)(10,12,15,16)(17,20)(18,23)(19,26)(21,28)(22,25)(24,30)(27,29)(31,32)(33,34)(35,39)(36,40)(37,38)(41,47)(42,45)(43,48)(44,46)(1,4,7,9)(2,3,8,5)(6,12,14,16)(10,11,15,13)(17,21,22,31)(18,24,26,29)(19,27,23,30)(20,28,25,32)(1,5,7,3)(2,9,8,4)(6,11,14,13)(10,12,15,16)(17,20)(18,19)(21,28)(22,25)(23,26)(24,27)(29,30)(31,32)(33,35,37,42)(34,39,38,45)(36,43,44,41)(40,48,46,47)(1,6,7,14)(2,10,8,15)(3,11,5,13)(4,12,9,16)(17,19)(18,25)(20,26)(21,27)(22,23)(24,32)(28,29)(30,31)(33,36,37,44)(34,40,38,46)(35,41,42,43)(39,47,45,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.